Bin structure



FIG. 1 is a perspective view of the bin structure.

FIG. 2 is a front elevational view of the bin structure.

FIG. 3 is a top view of the bin structure.

FIG. 4 is a left side elevational view of the bin structure; and,

FIG. 5 is a right side elevational view of the bin structure.

The broken lines showing is included for the purpose of illustrating environment of the design and forms no part of the claimed design. 

The ornamental design for a bin structure, as shown and described. 